23 Mar
2000
23 Mar
'00
2:02 p.m.
<It looks like the m7605 quarter-inch streaming tape controller has a bad
<PAL? and won't let the ram test continue. I removed it from the machine
No idea where you'd get one.
<and will look for a replacement IC to get it running. I don't have the
<drive anyway. Thanks for your quick response Allison! The machine does
<run just fine it appears even without the controller in.
Gotta love PDP-11s. ;)
<RT11 Version 5 / CTS 300 Version 8 is the system rev that posts at
<startup.
Killer, CTS300 on it! Nice, very nice! Sounds like it was configured as
a multiuser system.
Allison
23 Mar
23 Mar
2:43 p.m.
New subject: PDP-11/23 deskside machine -DAMN
After putting the skins back on the machine it is giving me a ERROR 13 -
DU0 not ready error.
DAMN!
I knew it wouldn't be that easy. I have a couple of spare ST506-type
drives to hang off it but don't know how picky the controller is or where
to find install media for an operating system. The drive sounds fine
(spins up and purges but no boot anymore) DAMN.
What free operating systems are out there for this machine. I suppose I
will get another drive up and running and then get the data off of this
one if it is possible. DAMN.
To be honest I think I didn't park the drive before powering off the last
time and suspect a head crash wiped the boot sector or something like
that. Now when I try to boot I hear the drive track but get this error.
DAMN.
How can I get boots to restore a system?
Yes, I suspect it ran up to six terminals as there are two controlled from
the cpu card and four controlled by a terminal controller card.
512KB MEMORY KDF11B-BE ROM V0.9 CLOCK
ENABLED
BOOT MENU
Device Physical Valid Unit
Name Device Numbers
DU DSA 0 1 2 3 4 5 6 7
DL RL01/RL02 0 1 2 3
DX RX01 0 1
DY RX02 0 1
DD TU58 0 1
XH QNA 0 1
MS TQK25/TS05 0
TRYING UNIT DU0
ERROR UNIT DU0
ERR 13 DRIVE NOT READY
WISH TO REBOOT [Y,(N)]?
--
-----------------------------------------------------------
Jeffrey S. Worley
Technical Services
Bits & Bytes Computer Services Inc.
1979B Hendersonville Road
Asheville, NC 28803
828-684-8953 - voice 0900-1700 five days
828-687-9284 - 24hr fax
Who is General Failure and why is he reading my hard disk?
Technoid(a)Cheta.net
-----------------------------------------------------------
24 Mar
24 Mar
12:02 a.m.
New subject: PDP-11/23 deskside machine -DAMN
On Thu, 23 Mar 2000 Technoid(a)cheta.net wrote:
After putting the skins back on the machine it is
giving me a ERROR 13 -
DU0 not ready error.
DAMN!
Lessee, dud you puch the offline(READY) or WRITELOCK buttons? All cables
on and correctly positioned? I doubt it that the disk failed unless you
outright dropped it. If memeory serves you said its a RD52 (quantum D540
31 MB) and those are known for being near indestructable.
I knew it wouldn't be that easy. I have a couple
of spare ST506-type
drives to hang off it but don't know how picky the controller is or where
The controller depending on which one you have is quit able to accept a
large number of drives. BUT, they must be formetted for it and the
average PC controller will not do it.
to find install media for an operating system. The
drive sounds fine
(spins up and purges but no boot anymore) DAMN.
Likely it's still there. Finding media is easy BUT, RT-11 is a licensed
OS that is still actively sold and used (not cheap either). A free OS
none I know of. You can get a license for unix (PUPS) for 100$ that
entitles you to a whole raft of versions that run on PDP11 and sources as
well.
To be honest I think I didn't park the drive
before powering off the last
time and suspect a head crash wiped the boot sector or something like
that. Now when I try to boot I hear the drive track but get this error.
If RD52 it's a voicecoil drive and it's automatic. It's possible to munge
the disk on powerdown but less than likely.
How can I get boots to restore a system?
??boots???
List of BOOT roms in the machine for the purpose of booting a device.
DU DSA 0 1 2 3 4 5 6 7
DL RL01/RL02 0 1 2 3
DX RX01 0 1
DY RX02 0 1
DD TU58 0 1
XH QNA 0 1
MS TQK25/TS05 0
FYI: QNA is network, PDP-11s did MOP boot.
ERROR UNIT DU0
ERR 13 DRIVE NOT READY
WISH TO REBOOT [Y,(N)]?
Cable, READY button, or other problem or wrong boot device selected (may
not be DU0, could be DUn).
Allison
4:36 a.m.
New subject: PDP-11/23 deskside machine -DAMN
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7:15 a.m.
New subject: PDP-11/23 deskside machine -DAMN
In <m12YYwO-000IyJC@p850ug1>, on 03/24/00
at 04:15 PM, ard(a)p850ug1.demon.co.uk (Tony Duell) said:
>
> After putting the skins back on the machine it is giving me a ERROR 13 -
> DU0 not ready error.
>
> DAMN!
Ouch, indeed :-(
But are you _sure_ the drive is damaged? Most of the
time something like
this is caused by :
Not really. It sounds just fine.
Knocking a DIP switch (or one of those frontpanel drive
control switches
on Qbus boxes) when refitting the case
Knocking a cable out of place
Traping (and damaging or shorting) a cable
Shorting the logic board on the drive to the case
(I've had this one once
-- an RD53 would work upside-down on the bench but wouldn't work in the
machine. Turned out it was shorting to the mounting skid when it was the
right way up).
This last thing is for sure not the case but the others are possible and
when I get home I intend to hit each of them in turn. I hope it is a
setting and not something worse. The thing is that I had the thing
working, replaced the two metal hatches and slid it back into the plastic
outer case. No boards or cables were involved so I have to think it is
probably something worse than a setting or loose cable.
All very good advice though. Thanks all.
I'd look for simple problems first...
-tony
--
-----------------------------------------------------------
Jeffrey S. Worley
Technical Services
Bits & Bytes Computer Services Inc.
1979B Hendersonville Road
Asheville, NC 28803
828-684-8953 - voice 0900-1700 five days
828-687-9284 - 24hr fax
Who is General Failure and why is he reading my hard disk?
Technoid(a)Cheta.net
-----------------------------------------------------------
8:04 a.m.
New subject: Mac Disk Drive
I've got this MAC 80MB SCSI disk drive which seems to work quite well. What
I wanted when I got the thing, was the box it lives in. On close
examination, I can't find the way to open the thing. The thing is of little
use so long as it is not useable as a SCSI box. It's the right size, etc,
but I want to put something useful in it.
Does anybody know how it opens up?
Dick
10:20 a.m.
New subject: Mac Disk Drive
I've got this MAC 80MB SCSI disk drive which seems
to work quite well. What
I wanted when I got the thing, was the box it lives in. On close
examination, I can't find the way to open the thing. The thing is of little
use so long as it is not useable as a SCSI box. It's the right size, etc,
but I want to put something useful in it.
Does anybody know how it opens up?
You need to tell us who makes the enclosure, etc. Some are clearly not
designed for the end user to be able to open, typically the real small
enclosures. The larger boxes almost always are just some screws, sometimes
under labels.
4:15 p.m.
New subject: Mac Disk Drive
It's an APPLE unit. They did this sort of thing all the time, since they
didn't want anyone to know just how overpriced there stuff was.
Dick
----- Original Message -----
From: Mike Ford <mikeford(a)socal.rr.com>
To: <classiccmp(a)classiccmp.org>
Sent: Friday, March 24, 2000 5:20 PM
Subject: Re: Mac Disk Drive
>I've got this MAC 80MB SCSI disk drive which
seems to work quite well.
What
>I wanted when I got the thing, was the box it
lives in. On close
>examination, I can't find the way to open the thing. The thing is of
little
>use so long as it is not useable as a SCSI box.
It's the right size,
etc,
but I want to
put something useful in it.
Does anybody know how it opens up?
You need to tell us who makes the enclosure, etc. Some are clearly not
designed for the end user to be able to open, typically the real small
enclosures. The larger boxes almost always are just some screws, sometimes
under labels.
25 Mar
25 Mar
3:36 a.m.
New subject: Mac Disk Drive
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11:51 a.m.
New subject: Mac Disk Drive
I got 'im opened up. The problem I wanted to address was the fact that the
external thumbwheel didn't seem to have any effect. Once I opened the box
up, I was able to rectify the disconnect. 80MB is about the right size for
CP/M-80.
Now, if only I could find a BIOS implementation and maybe a couple of
utilities for a WD33C93 of which I've got several. I'm sure it's been done,
yet I haven't a clue where to snoop for it. I may actually have to . . .
<cringe> . . . write some code . . .
Dick
----- Original Message -----
From: Tony Duell <ard(a)p850ug1.demon.co.uk>
To: <classiccmp(a)classiccmp.org>
Sent: Saturday, March 25, 2000 10:36 AM
Subject: Re: Mac Disk Drive
sometimes
You need to
tell us who makes the enclosure, etc. Some are clearly not
designed for the end user to be able to open, typically the real small
_Everything_ can be openned by _this_ end-user. And a lot of things go
back together again afterwards...
> enclosures. The larger boxes almost always are just some screws, under labels.
Another thing to look at is the feet. Sometimes there are screws hidden
under stick-on feet. Sometimes the screws that hold the feet on also hold
the box together.
-tony
9038
days inactive
9040
days old
9 comments
5 participants
participants (5)
-
allisonp＠world.std.com -
ard＠p850ug1.demon.co.uk -
edick＠idcomm.com -
mikeford＠socal.rr.com -
Technoid＠cheta.net